This is my first map, i think i did a pretty good job for my first map evar, i mean. its better than a box with barrels in it. Right?"I've tried to put pictures up but it just doesnt seem to work, My steam account is -Sargent- 05 if anyone can help me."

This download looks like a map. You need to place it in your maps folder inside the Garry's Mod folder.